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EosFit-Pinc: A simple GUI for host-inclusion elastic thermobarometry

  • Ross J. Angel EMAIL logo , Mattia L. Mazzucchelli , Matteo Alvaro and Fabrizio Nestola
Published/Copyright: September 5, 2017
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American Mineralogist
From the journal American Mineralogist Volume 102 Issue 9

Abstract

Elastic geothermobarometry is a method of determining metamorphic conditions from the excess pressures exhibited by mineral inclusions trapped inside host minerals. An exact solution to the problem of combining non-linear Equations of State (EoS) with the elastic relaxation problem for elastically isotropic spherical host-inclusion systems without any approximations of linear elasticity is presented. The solution is encoded into a Windows GUI program EosFit-Pinc. The program performs host-inclusion calculations for spherical inclusions in elastically isotropic systems with full P-V-T EoS for both phases, with a wide variety of EoS types. The EoS values of any minerals can be loaded into the program for calculations. EosFit-Pinc calculates the isomeke of possible entrapment conditions from the pressure of an inclusion measured when the host is at any external pressure and temperature (including room conditions), and it can calculate final inclusion pressures from known entrapment conditions. It also calculates isomekes and isochors of the two phases.

Keywords: Geobarometry; inclusion; Equations of State; elasticity

Acknowledgments

Software development and analysis was supported by ERC starting grant 307322 to Fabrizio Nestola, and by the MIUR-SIR grant “MILE DEEp” (RBSI140351) to Matteo Alvaro. We thank Javier Gonzalez-Platas (La Laguna) for continuing collaboration and development of the CrysFML, and Frank Spear (RPI) and Kyle Ashley (Austin, Texas) for comparison calculations, detailed discussions, and helpful reviews.

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Received: 2017-5-15
Accepted: 2017-6-15
Published Online: 2017-9-5
Published in Print: 2017-9-26

© 2017 by Walter de Gruyter Berlin/Boston

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https://doi.org/10.2138/am-2017-6190
Keywords for this article
Geobarometry; inclusion; Equations of State; elasticity

Articles in the same Issue

  1. Highlights and Breakthroughs
  2. Looking for “missing” nitrogen in the deep Earth
  3. Actinides in Geology, Energy, and the Environment
  4. Crystal structure of richetite revisited: Crystallographic evidence for the presence of pentavalent uranium
  5. Actinides in Geology, Energy, and the Environment
  6. Mobilization and agglomeration of uraninite nanoparticles: A nano-mineralogical study of samples from the Matoush Uranium ore deposit
  7. Actinides in Geology, Energy, and the Environment
  8. Radiation damage in sulfides: Radioactive galena from burning heaps, after coal mining in the Lower Silesian basin (Czech Republic)
  9. Special Collection: Mechanisms, Rates, and Timescales of Geochemical Transport Processes in the Crust and Mantle
  10. Element mobility during regional metamorphism in crustal and subduction zone environments with a focus on the rare earth elements (REE)
  11. Special Collection: Water in Nominally Hydrous and Anhydrous Minerals
  12. Subsolidus hydrogen partitioning between nominally anhydrous minerals in garnet-bearing peridotite
  13. Special Collection: Water in Nominally Hydrous and Anhydrous Minerals
  14. OH defects in quartz as monitor for igneous, metamorphic, and sedimentary processes
  16. Quantitative electron backscatter diffraction (EBSD) data analyses using the dictionary indexing (DI) approach: Overcoming indexing difficulties on geological materials
  18. Trace element inventory of meteoritic Ca-phosphates
  20. Insights into solar nebula formation of pyrrhotite from nanoscale disequilibrium phases produced by H2S sulfidation of Fe metal
  22. Unraveling the presence of multiple plagioclase populations and identification of representative two-dimensional sections using a statistical and numerical approach
  24. Refractive indices of minerals and synthetic compounds
  26. Can we use pyroxene weathering textures to interpret aqueous alteration conditions? Yes and No
  28. Phase relations and formation of K-bearing Al-10 Å phase in the MORB+H2O system: Implications for H2O- and K-cycles in subduction zones
  30. Effect of alkalis on the reaction of clinopyroxene with Mg-carbonate at 6 GPa: Implications for partial melting of carbonated lherzolite
  32. Synthesis and crystal structure of LiNbO3-type Mg3Al2Si3O12: A possible indicator of shock conditions of meteorites
  34. Single crystal synthesis of δ-(Al,Fe)OOH
  35. Letter
  36. EosFit-Pinc: A simple GUI for host-inclusion elastic thermobarometry
  38. New Mineral Names
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